Slap Happy LionAnimationComedy66706696Slap Happy Lion66706696AnimationComedythumb_upthumb_downSlap Happy LionSeptember 20, 1947Directed byTex AveryThe king of the jungle, after a well spent day terrorising the rest of the animals, is petrified by a mouse.US content warning lionfearnervous breakdownintimidationcartoon mouse+4 more Last Updated: 22 days ago Request Update CastFrank GrahamMouse (voice) (uncredited) Image Gallery RecommendedHe Was a Quiet ManOppenheimerDuneAvengers: EndgameThe Last DuelTerrifier 2TolkienHalloween 4: The Return of Michael MyersBlue BeetleThe Suicide SquadSouth Park: Post COVID: The Return of COVIDThe Return of the Living DeadSpider-Man: No Way HomeHellraiserDon't Look Up